I am a huge GLoomis Fan, but i have mostly GL3's. The only other three rods i have by GLoomis are :GL4 9' 5 wt 2 pc great nymphing rod and will handle some wind, a GL4 9' 9wt 2pc this is my main Salmon/Steelhead rod,it is great for the great lakes however not enough backbone for windy saltwater, I recently aquired a GLX 9' 10 wt 2 pc for Stripahhhhhssss/Albies/Blues.
IMHO the GLX is still an incredible rod series especially where wind is concerned and distance is needed,GLoomis set the Bar years ago with this.I have yet to cast the NRX or fish it for that matter.
I think its all about what you are looking for : wind/distance and great presentation = GLX/NRX?,for what its worth a NRX is awfully pricey. ID go to Fleabay an see if you can get one used,at least save a few bucks.
IMHO fast sticks suck on Spring Creeks,stay with a mid action an you will be far happier...even Sage is gettin back to what really matters now with a mid action series they just released.
For Saltwater or Freshwater where you will be dealing with wind go with the GLX/NRX,aside from that there are better rods out there for a hell of alot less money an that money can be used for buying lots of gas to go on fishing trips!
Tight Wraps & Tight Lines
Rick Wallace
BTW ..best things Orvis does are their CFO reels,and their Super Stong tippet.